Home / 143,986.24-198,699.56-79,456

Finding the Fourth Proportional to 143,986.24, 198,699.56 and 79,456

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Solution

The fourth proportional to 143,986.24, 198,699.56 and 79,456 is: 109,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,986.24 : 198,699.56 = 79,456 : x
  2. Step 2: Convert to fraction form
    143,986.24/198,699.56 = 79,456/x
  3. Step 3: Cross multiply
    143,986.24x = 198,699.56 × 79,456
  4. Step 4: Simplify right side
    143,986.24x = 15,787,872,239.36
  5. Step 5: Solve for x
    x = 15,787,872,239.36/143,986.24
  6. Step 6: Final answer
    x = 109,648.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.